package com.cqeec.myblog.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebFilter("/app/*")
public class UserAuthFilter implements Filter {

	@Override
	public void destroy() {
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain filterChain)
			throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		Object obj = req.getSession().getAttribute("blogger");
		if (obj == null) {
			((HttpServletResponse) response).sendRedirect(req.getContextPath() + "/blogger/login.html");
		} else {
			filterChain.doFilter(request, response);
		}
	}

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
	}

}
